Donald Qualls wrote: > Picture two gyroscopes with opposite spin > directions, and the frames locked rigidly together. When you tilt them, > one gyro tries to precess one way, the other tries to precess the other > way. If the angular moments of inertia and angular momenta are > identical, the two precessions will cancel, leaving you with a > gyroscopic device that will simply fall over instead of precessing.
If you need further proof, isn't this what most people do when they have something rotating where they *don't* want gyroscopic effects? For instance, in a helicopter: if all you have is your main rotor, you want to be able to tilt, since that gives you the ability to translate forward/reverse and left/right - split the main rotor's thrust into vertical and horizontal components. One not-too-uncommon way to do this is to have two main rotors, spinning in opposite directions. (A slight difference in rotation speeds can also let you induce angular momentum, turning the helicopter left/right.) _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list
